Convert MsgGetHeaders errors to MessageError type.
Convert MsgGetHeaders errors to MessageError type.

hectorj/btcd,CryptocurrencyCabal/htcd,aakselrod/btcd,soapboxsys/ombfullnode,aakselrod/btcd,qchain/btcd,stevenroose/btcd,DanielKrawisz/btcd,tb00/btcd,ppcsuite/ppcd,cqswxj2013/btcd,mathiasrw/btcd,hectorj/btcd,jongillham/btcd,adiabat/btcd,Cleawing/btcd,cqswxj2013/btcd,1d4Nf6/btcd,cjepson/btcd,jrick/btcd,CryptocurrencyCabal/htcd,FactomProject/btcd,jrick/btcd,ppcsuite/ppcd,pkothbauer/btcd,Roasbeef/btcd,jcmincke/dcrd,Stash-Crypto/btcd,dan-da/btcd,adiabat/btcd,glv2/ppcd,dajohi/btcd,danoctavian/btcd,Cleawing/btcd,stevenroose/btcd,jrick/btcd,ltcsuite/ltcd,toddfries/btcd,cjepson/btcd,ppcsuite/ppcd-old,decred/dcrd,btcsuitereleases/btcd,dajohi/btcd,qchain/btcd,wallclockbuilder/btcd,davecgh/btcd,jongillham/btcd,FactomProject/btcd,toddfries/btcd,BitGo/prova,soapboxsys/ombfullnode,glv2/ppcd,jcmincke/dcrd,BitGo/prova,Dirbaio/btcd,DanielKrawisz/btcd,jcmincke/dcrd,btcsuite/btcd,Roasbeef/btcd,dan-da/btcd,ltcsuite/ltcd,decred/dcrd,pkothbauer/btcd,wallclockbuilder/btcd,jimmysong/btcd,Dirbaio/btcd,jimmysong/btcd,1d4Nf6/btcd,Dirbaio/btcd,runeaune/btcd,dajohi/btcd,jrick/dcrd,danoctavian/btcd,jrick/dcrd,ppcsuite/ppcd-old,btcsuite/btcd,btcsuitereleases/btcd,runeaune/btcd,mathiasrw/btcd,davecgh/btcd,Stash-Crypto/btcd,tb00/btcd